Polymorphism - Which Method Gets Called

While studying polymorphism , i have some doubts that i am unable to clarify ..... Here they are :

Suppose our inheritance ladder be :
C1 <- C2 <- C3 <-....... <- C100
where C1 is most general (superclass) and C100 is most specific class .
Now , if i write java code in my main() :

C21 Obj = new C100();
Obj.someMethod();

So, what will happen in scenarios as given below :

Scenario - 1) If someMethod() is only defined in C1 ? How will compiler search for this someMethod() ?Will it be executed ?
Scenario - 2) If that someMethod() is static and only defined in C1 , then how will it be searched and executed ?
Scenario - 3) If someMethod() is only present in C100 , then what will happen ?